The following adds local bus, flash and MTD partition nodes for
sbc8548. As well, a compatible field for the soc node, so that
of_platform_bus_probe() will pick it up.
Something that is provided through this newly added epld node
is the Hardware Revision is now being reported at bootup.
Signed-off-by: Jeremy McNicoll <[EMAIL PROTECTED]>
---
arch/powerpc/boot/dts/sbc8548.dts | 94 +++++++++++++++++++++++++++++++++
arch/powerpc/platforms/85xx/sbc8548.c | 25 +++++++++
2 files changed, 119 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/boot/dts/sbc8548.dts
b/arch/powerpc/boot/dts/sbc8548.dts
index b86e65d..dd9a061 100644
--- a/arch/powerpc/boot/dts/sbc8548.dts
+++ b/arch/powerpc/boot/dts/sbc8548.dts
@@ -52,6 +52,99 @@
reg = <0x00000000 0x10000000>;
};
+ [EMAIL PROTECTED] {
+ #address-cells = <2>;
+ #size-cells = <1>;
+ compatible = "simple-bus";
+ reg = <0xe0000000 0x5000>;
+ interrupt-parent = <&mpic>;
+
+ ranges = <0x0 0x0 0xff800000 0x00800000 /*8MB Flash*/
+ 0x3 0x0 0xf0000000 0x04000000 /*64MB SDRAM*/
+ 0x4 0x0 0xf4000000 0x04000000 /*64MB SDRAM*/
+ 0x5 0x0 0xf8000000 0x00b10000 /* EPLD */
+ 0x6 0x0 0xfb800000 0x04000000>; /*64MB Flash*/
+
+
+ [EMAIL PROTECTED],0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "cfi-flash";
+ reg = <0x0 0x0 0x800000>;
+ bank-width = <1>;
+ device-width = <1>;
+ [EMAIL PROTECTED] {
+ label = "space";
+ reg = <0x00000000 0x00100000>;
+ };
+ [EMAIL PROTECTED] {
+ label = "bootloader";
+ reg = <0x00100000 0x00700000>;
+ read-only;
+ };
+ };
+
+ [EMAIL PROTECTED],0 {
+ compatible = "wrs,epld-localbus";
+ #address-cells = <2>;
+ #size-cells = <1>;
+ reg = <0x5 0x0 0x00b10000>;
+ ranges = <
+ 0x0 0x0 0x5 0x000000 0x1fff /* LED */
+ 0x1 0x0 0x5 0x100000 0x1fff /* Switches */
+ 0x3 0x0 0x5 0x300000 0x1fff /* HW Rev. */
+ 0xb 0x0 0x5 0xb00000 0x1fff /* EEPROM */
+ >;
+
+ [EMAIL PROTECTED],0 {
+ compatible = "led";
+ reg = <0x0 0x0 0x1fff>;
+ };
+
+ [EMAIL PROTECTED],0 {
+ compatible = "switches";
+ reg = <0x1 0x0 0x1fff>;
+ };
+
+ [EMAIL PROTECTED],0 {
+ compatible = "hw-rev";
+ reg = <0x3 0x0 0x1fff>;
+ };
+
+ [EMAIL PROTECTED],0 {
+ compatible = "eeprom";
+ reg = <0xb 0 0x1fff>;
+ };
+
+ };
+
+ [EMAIL PROTECTED],0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x6 0x0 0x04000000>;
+ compatible = "cfi-flash";
+ bank-width = <4>;
+ device-width = <1>;
+ [EMAIL PROTECTED] {
+ label = "bootloader";
+ reg = <0x00000000 0x00100000>;
+ read-only;
+ };
+ [EMAIL PROTECTED] {
+ label = "file-system";
+ reg = <0x00100000 0x01f00000>;
+ };
+ [EMAIL PROTECTED] {
+ label = "boot-config";
+ reg = <0x02000000 0x00100000>;
+ };
+ [EMAIL PROTECTED] {
+ label = "space";
+ reg = <0x02100000 0x01f00000>;
+ };
+ };
+ };
+
[EMAIL PROTECTED] {
#address-cells = <1>;
#size-cells = <1>;
@@ -59,6 +152,7 @@
ranges = <0x00000000 0xe0000000 0x00100000>;
reg = <0xe0000000 0x00001000>; // CCSRBAR
bus-frequency = <0>;
+ compatible = "simple-bus";
[EMAIL PROTECTED] {
compatible = "fsl,8548-memory-controller";
diff --git a/arch/powerpc/platforms/85xx/sbc8548.c
b/arch/powerpc/platforms/85xx/sbc8548.c
index 488facb..d148d45 100644
--- a/arch/powerpc/platforms/85xx/sbc8548.c
+++ b/arch/powerpc/platforms/85xx/sbc8548.c
@@ -130,6 +130,7 @@ static void sbc8548_show_cpuinfo(struct seq_file *m)
static struct of_device_id __initdata of_bus_ids[] = {
{ .name = "soc", },
{ .type = "soc", },
+ { .compatible = "simple-bus", },
{},
};
@@ -141,6 +142,30 @@ static int __init declare_of_platform_devices(void)
}
machine_device_initcall(sbc8548, declare_of_platform_devices);
+/* Extract the HW Rev from the EPLD on the board */
+static int __init sbc8548_hw_rev(void)
+{
+ struct device_node *np;
+ struct resource res;
+ unsigned int *rev;
+
+ np = of_find_compatible_node(NULL, NULL, "hw-rev");
+ if (np == NULL) {
+ printk("No HW-REV found in DTB.\n");
+ return -ENODEV;
+ }
+
+ of_address_to_resource(np, 0, &res);
+ of_node_put(np);
+
+ rev = ioremap(res.start,sizeof(unsigned int));
+ printk("Detected HW Rev. 0x%x\n", ((*rev) >> 28));
+ iounmap(rev);
+
+ return 0;
+}
+arch_initcall(sbc8548_hw_rev);
+
/*
* Called very early, device-tree isn't unflattened
*/
--
1.5.3.7
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